February 2019
Intermediate to advanced
240 pages
5h 25m
English
Content preview from Docker for Rails DevelopersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Scaling Up the Service
Currently, each of our services has been backed by a single task (and therefore container). We can instruct Swarm to increase or decrease the number of containers backing a service—known as scaling the service.
From the previous discussion, it should be clear how Swarm implements scaling. Imagine that the swarm receives a new definition of the web service, which specifies three containers. The orchestrator sees that only one task has been scheduled, and that therefore two more containers are required. It proceeds to create two new tasks, scheduling them across the available nodes in the cluster. The node (or nodes) allocate the tasks, then start up one container for each task they’ve been assigned. And voilà, we have scaled ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.